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| 1 | #include "trig.h" |
1 | #include "trig.h" |
| 2 | #include " |
2 | #include "brender.h" |
| 3 | #include "harness/trace.h" |
3 | #include "harness/trace.h" |
| 4 | #include <math.h> |
4 | #include <math.h> |
| 5 | #include <stdlib.h> |
5 | #include <stdlib.h> |
| 6 | 6 | ||
| 7 | float gFloat_sine_table[91] = { |
7 | float gFloat_sine_table[91] = { |
| Line 176... | Line 176... | ||
| 176 | 176 | ||
| 177 | // IDA: br_scalar __usercall FastScalarSinAngle@<ST0>(br_angle pBR_angle@<EAX>) |
177 | // IDA: br_scalar __usercall FastScalarSinAngle@<ST0>(br_angle pBR_angle@<EAX>) |
| 178 | br_scalar FastScalarSinAngle(br_angle pBR_angle) { |
178 | br_scalar FastScalarSinAngle(br_angle pBR_angle) { |
| 179 | LOG_TRACE("(%d)", pBR_angle); |
179 | LOG_TRACE("(%d)", pBR_angle); |
| 180 | 180 | ||
| 181 | return FastScalarSin( |
181 | return FastScalarSin(BrAngleToDegree(pBR_angle)); |
| 182 | } |
182 | } |
| 183 | 183 | ||
| 184 | // IDA: br_scalar __usercall FastScalarCosAngle@<ST0>(br_angle pBR_angle@<EAX>) |
184 | // IDA: br_scalar __usercall FastScalarCosAngle@<ST0>(br_angle pBR_angle@<EAX>) |
| 185 | br_scalar FastScalarCosAngle(br_angle pBR_angle) { |
185 | br_scalar FastScalarCosAngle(br_angle pBR_angle) { |
| 186 | LOG_TRACE("(%d)", pBR_angle); |
186 | LOG_TRACE("(%d)", pBR_angle); |
| 187 | 187 | ||
| 188 | return FastScalarCos( |
188 | return FastScalarCos(BrAngleToDegree(pBR_angle)); |
| 189 | } |
189 | } |
| 190 | 190 | ||
| 191 | // IDA: br_scalar __usercall FastScalarTanAngle@<ST0>(br_angle pBR_angle@<EAX>) |
191 | // IDA: br_scalar __usercall FastScalarTanAngle@<ST0>(br_angle pBR_angle@<EAX>) |
| 192 | br_scalar FastScalarTanAngle(br_angle pBR_angle) { |
192 | br_scalar FastScalarTanAngle(br_angle pBR_angle) { |
| 193 | int angle_in_degrees; |
193 | int angle_in_degrees; |
| 194 | LOG_TRACE("(%d)", pBR_angle); |
194 | LOG_TRACE("(%d)", pBR_angle); |
| 195 | 195 | ||
| 196 | angle_in_degrees = |
196 | angle_in_degrees = BrAngleToDegree(pBR_angle); |
| 197 | return FastScalarSin(angle_in_degrees) / FastScalarCos(angle_in_degrees); |
197 | return FastScalarSin(angle_in_degrees) / FastScalarCos(angle_in_degrees); |
| 198 | } |
198 | } |
| 199 | 199 | ||
| 200 | // IDA: float __cdecl FastFloatArcSin(float pValue) |
200 | // IDA: float __cdecl FastFloatArcSin(float pValue) |
| 201 | float FastFloatArcSin(float pValue) { |
201 | float FastFloatArcSin(float pValue) { |
| 202 | float low_limit; |
202 | float low_limit; |
| 203 | float high_limit; |
203 | float high_limit; |
| 204 | float mid_point; |
204 | float mid_point; |
| 205 | LOG_TRACE("(%f)", pValue); |
205 | LOG_TRACE("(%f)", pValue); |
| 206 | 206 | ||
| 207 | if (pValue < 0.f) { |
207 | if (pValue < 0.f) { |
| 208 | return -FastFloatArcSin(-pValue); |
208 | return -FastFloatArcSin(-pValue); |
| 209 | } |
209 | } |
| 210 | high_limit = 90.f * pValue; |
210 | high_limit = 90.f * pValue; |
| 211 | low_limit = high_limit - 19.f; |
211 | low_limit = high_limit - 19.f; |